EP3869713B1 - Procédé de commande d'interférence électromagnétique et appareil associé - Google Patents

Procédé de commande d'interférence électromagnétique et appareil associé Download PDF

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Publication number
EP3869713B1
EP3869713B1 EP19885648.6A EP19885648A EP3869713B1 EP 3869713 B1 EP3869713 B1 EP 3869713B1 EP 19885648 A EP19885648 A EP 19885648A EP 3869713 B1 EP3869713 B1 EP 3869713B1
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EP
European Patent Office
Prior art keywords
frequency
target
screen
projection
interference
Prior art date
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Application number
EP19885648.6A
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German (de)
English (en)
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EP3869713A1 (fr
EP3869713A4 (fr
Inventor
Kai Tang
Zhengpeng Tan
Yun Chen
Lizhong Wang
Hai Yang
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Publication of EP3869713A1 publication Critical patent/EP3869713A1/fr
Publication of EP3869713A4 publication Critical patent/EP3869713A4/fr
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/738—Interface circuits for coupling substations to external telephone lines
    • H04M1/74—Interface circuits for coupling substations to external telephone lines with means for reducing interference; with means for reducing effects due to line faults
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B15/00—Suppression or limitation of noise or interference
    • H04B15/02—Reducing interference from electric apparatus by means located at or near the interfering apparatus
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
    • G06F3/1454—Digital output to display device ; Cooperation and interconnection of the display device with other functional units involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/003—Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto
    • G09G5/006—Details of the interface to the display terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/3827—Portable transceivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/24—Arrangements for testing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
    • H04M1/72409—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by interfacing with external accessories
    • H04M1/72412—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by interfacing with external accessories using two-way short-range wireless interfaces
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/06—Handling electromagnetic interferences [EMI], covering emitted as well as received electromagnetic radiation
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2370/00—Aspects of data communication
    • G09G2370/16—Use of wireless transmission of display information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H04M1/72448—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions
    • H04M1/72454—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions according to context-related or environment-related conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2250/00—Details of telephonic subscriber devices
    • H04M2250/06—Details of telephonic subscriber devices including a wireless LAN interface
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]

Definitions

  • This disclosure relates to the technical filed of electronic devices, and particularly to a method for electromagnetic interference control and related devices
  • a driver-integrated chip of a display has extended to an antenna clearance area, and a frequency division point and/or a frequency multiplication point of a frequency of a mobile industry processor interface (MIPI) of the display has an interference to a radio frequency antenna, which leads to low receiving sensitivity (i.e., total isotropic sensitivity (TIS)) of the antenna.
  • MIPI mobile industry processor interface
  • implementations provide a method for electromagnetic interference control.
  • the method for electromagnetic interference control includes the following.
  • a Wi-Fi module is activated in response to detecting a request for screen-projection to a target screen-projection device.
  • a target wireless network is searched for and accessed, where the target screen-projection device is connected to the target wireless network.
  • Electromagnetic interference between the Wi-Fi module and a mobile industry processor interface (MIPI) of a display of the electronic device is detected.
  • MIPI mobile industry processor interface
  • a first prompt message is output, the display is turned off, and screen-projection to the target screen-projection device is performed, where the first prompt message indicates that the electronic device is turning off the display and performing screen-projection to the target screen-projection device.
  • implementations provide an electronic device.
  • the electronic device includes a processor, a memory, a communication interface, and one or more programs stored in the memory.
  • the one or more programs are configured to be executed by the processor and include instructions configured to perform operations of the method in the first aspect.
  • implementations provide a computer-readable storage medium.
  • the computer-readable storage medium is configured to store a computer program for electronic data interchange.
  • the computer program causes a computer to execute all or part of operations of the method in the first aspect.
  • the electronic device in response to detecting the request for screen-projection to the target screen-projection device, activates the Wi-Fi module.
  • the electronic device searches for and accesses the target wireless network, where the target screen-projection device is connected to the target wireless network.
  • the electronic device detects whether there is electromagnetic interference between the Wi-Fi module and the MIPI of the display of the electronic device.
  • the electronic device outputs the first prompt message, turns off the display, and performs screen-projection to the target screen-projection device, where the first prompt message is used to indicate that the electronic device is turning off the display and performing screen-projection to the target screen-projection device.
  • the electronic device upon detecting the request for screen-projection and there is electromagnetic interference between the Wi-Fi module and the MIPI of the display, the electronic device turns off the display, and performs screen-projection in the background, thereby avoiding electromagnetic interference between the Wi-Fi module and the MIPI of the display which affects a success rate of screen-projection, and improving communication stability in a screen-projection scene.
  • the electronic devices involved in the implementations of the present application may be electronic devices with data transmission capabilities.
  • the electronic device may include various handheld devices, in-vehicle devices, wearable devices, computing devices that have wireless communication functions or other processing devices connected to the wireless modem, as well as various forms of user equipment (UE), mobile stations (MS), terminal devices, and the like.
  • UE user equipment
  • MS mobile stations
  • terminal devices and the like.
  • an electronic device 101 can be connected with a base station 103 and/or a wireless hotspot device 102.
  • a voice call service such as a voice call service in long term evolution (LTE)can be achieved through a mobile communication network.
  • LTE long term evolution
  • a voice call service such as an IP multimedia subsystem (IMS) voice call service can be achieved through a wireless local area network (WLAN).
  • IMS IP multimedia subsystem
  • DLNA digital living network alliance
  • Airplay Miracast
  • WiDi wireless display
  • DLNA digital living network alliance
  • Screen-projection of an electronic device can be realized based on DLNA.
  • DLNA aims at "enjoy your music, photos and videos, anywhere anytime”.
  • DLNA is initiated and established by Sony TM , Intel TM , Microsoft TM and the like, to realize interconnection between a wireless network and a wired network involving personal PCs, consumer appliances, mobile devices, and the like, thereby making unlimited sharing and growth of digital media and content services possible.
  • DLNA standard includes a number of protocols and standards, the most important part of which is UPnP.
  • FIG. 3 is a schematic flow chart illustrating a method for electromagnetic interference control according to implementations. As illustrated in FIG.3 , the method for electromagnetic interference control begins at block 301.
  • an electronic device activates a Wi-Fi module.
  • the electronic device can activate the Wi-Fi module upon detecting the request for screen-projection to the target screen-projection device; alternatively, the electronic device can also activate the Wi-Fi module upon detecting a request for screen-projection.
  • the electronic device searches for and accesses a target wireless network, where the target screen-projection device is connected to the target wireless network.
  • a router When the electronic device communicates with a wireless hotspot, a router will select different communication channels for data transmission. Each communication channel corresponds to frequency-domain resources specified in protocols, such as a global system for mobile communication (GSM) frequency band, an LTE B8/B20/B28 frequency bands etc. As known from communication protocols, in the process of handling different services, the electronic device can use one or more different communication channels in a same service-processing period.
  • GSM global system for mobile communication
  • the electronic device detects whether there is electromagnetic interference between the Wi-Fi module and a MIPI of a display of the electronic device.
  • the MIPI of the display can support different frequencies or frequency bands, such as 514.5 MHz, 512.5 MHz.
  • the Wi-Fi module has different channels, different channels correspond to different operating frequencies of the Wi-Fi module, and different operating frequencies cause different interferences to the frequency of the MIPI of the display.
  • the electronic device In response to detecting that there is electromagnetic interference, the electronic device outputs a first prompt message, turns off the display, and performs screen-projection to the target screen-projection device, where the first prompt message indicates that the electronic device is turning off the display and performing screen-projection to the target screen-projection device.
  • the first prompt message is output to prompt the user that the electronic device is to turn off a screen and perform screen-projection in the background, so as to avoid the display is turned off so suddenly.
  • the electronic device turns off the screen and performs screen-projection in response to detecting that there is interference, which can avoid screen-projection failure caused by interference between the display and the Wi-Fi module.
  • the electronic device in response to detecting the request for screen-projection to the target screen-projection device, activates the Wi-Fi module.
  • the electronic device searches for and accesses the target wireless network, where the target screen-projection device is connected to the target wireless network.
  • the electronic device detects whether there is electromagnetic interference between the Wi-Fi module and the MIPI of the display of the electronic device.
  • the electronic device outputs the first prompt message, turns off the display, and performs screen-projection to the target screen-projection device, where the first prompt message is used to indicate that the electronic device is turning off the display and performing screen-projection to the target screen-projection device.
  • the electronic device in response to detecting the request for screen-projection and there is electromagnetic interference between the Wi-Fi module and the MIPI of the display, the electronic device turns off the display, and performs screen-projection in the background, thereby avoiding electromagnetic interference between the Wi-Fi module and the MIPI of the display which affects a success rate of screen-projection, and improving communication stability in a screen-projection scene.
  • whether there is electromagnetic interference between the Wi-Fi module and the MIPI of the display of the electronic device is detected as follows.
  • At least one detection value of a first frequency and a detection value of a second frequency are obtained, where the first frequency is a communication frequency of the Wi-Fi module and the second frequency is an operating frequency of the MIPI.
  • the first frequency is a communication frequency of the Wi-Fi module and the second frequency is an operating frequency of the MIPI.
  • Whether there is electromagnetic interference between the Wi-Fi module and the MIPI is determined according to an interference channel list set in advance, where the interference channel list contains information of interference of different operating frequencies of the MIPI to different channels.
  • the interference channel list contains interference values and interference levels of interference of different operating frequencies of the MIPI to different Wi-Fi channels. According to the interference channel list, the detection value of the second frequency, and the at least one detection value of the first frequency in the interference channel, determine whether there is a detection value of the first frequency in the interference channel causing interface with respect to the detection value of the second frequency. If there is a detection value of the first frequency that causes interference to the detection value of the second frequency, determine that there is electromagnetic interference; if there is no detection value of the first frequency that causes interference to the detection value of the second frequency, determine that there is no electromagnetic interference.
  • Wireless routers generally have channels 1 ⁇ 13.
  • Table 1 only lists some channels, the frequency of the MIPI is a temporarily defined frequency, which will be adjusted according to actual situations in a specific implementation.
  • Table 1 The frequency of the MIPI Channel 1 Channel 2 Channel 3 Channel 4 Channel 5 Channel 6 Channel 7 512.5M 2db 4db 3-4db 6db 5db 0db 5db 514.5M 2db 3-4db 2db 4db 3db 1db 4db 516.5M 3db 5db 3db 4db 5db 2db 4db
  • the interference value is 1db
  • the frequency of the MIPI can be adjusted to 512.5M to achieve the minimum interference.
  • the electronic device uses channel 5 and the detection value of the second frequency (i.e., the frequency of the MIPI) is 512.5M, and a channel of the electronic device can be switched from channel 5 to channel 6 to achieve the minimal interference.
  • the detection value of the second frequency i.e., the frequency of the MIPI
  • the interference value is 3db
  • the frequency of the MIPI can be adjusted to 512.5M and the channel of the electronic device can be switched from channel 5 to channel 6.
  • the electronic device can obtain the at least one detection value of the first frequency and the detection value of the second frequency as follows.
  • the electronic device controls the Wi-Fi module to detect frequency information and report all channel information to an application processor (AP).
  • the electronic device controls the AP to receive all channel information and obtain the detection value of the second frequency.
  • the AP determines whether there is electromagnetic interference based on the frequency of the MIPI of the display detected locally. Due to strong processing capabilities, a detection result can be obtained quickly and efficiently.
  • the electronic device can also control a baseband processor (BP) to obtain the at least one detection value of the first frequency and receive the detection value of the second frequency from the AP through a channel.
  • BP baseband processor
  • the electronic device can also control the AP to obtain the detection value of the second frequency and send the detection value of the second frequency to the BP.
  • the BP detects whether there is electromagnetic interference in the electronic device according to the at least one detection value and the detection value of the second frequency.
  • the AP and BP of the electronic device can complete detection of electromagnetic interference interactively. Specifically, BP collects the at least one detection value of the first frequency, the AP detects the frequency of the MIPI of the display and sends it to the BP.
  • the BP determines whether there is electromagnetic interference based on the frequency of the MIPI of the display detected locally. Due to small data amount, low delay, and high real-time performance of transmission between the AP and the BP, electromagnetic interference can be detected efficiently.
  • the electronic device can quickly determine whether a frequency currently used by the MIPI of the display causes electromagnetic interference to any of the detection values of the first frequency based on frequency comparison, so as to quickly determine an electromagnetic interference scene based on real-time detection value and detect electromagnetic interference comprehensively and accurately, thereby improving accuracy and comprehensiveness of interference detection.
  • the method further includes the following after the first prompt message is output and the display is turned off when there is electromagnetic interference.
  • An operating frequency set of at least one channel of a target router and an available frequency range or available frequency of the second frequency are obtained.
  • a strategy for electromagnetic interference control is determined according to the interference channel list, the at least one detection value of the first frequency, and the detection value of the second frequency.
  • interference control is performed according to the strategy for electromagnetic interference control to reduce or avoid electromagnetic interference caused by the MIPI to a radio frequency system of the electronic device.
  • the strategy for electromagnetic interference control can be determined according to an operating frequency and a frequency of the MIPI of the display that cause the minimum interference in the interference channel list, the operating frequency set, and any one of the available frequency range and the available frequency value.
  • the interference control strategy can also be set in advance.
  • the electronic device can also determine the strategy for electromagnetic interference control according to the obtained operating frequency set of the at least one channel of the target router and the available frequency range or the available frequency of the second frequency, and perform interference control in response to detecting that the display is activated. In this way, electromagnetic interference occurred after the display is activated can be avoided, and stability of information interaction of the electronic device can be improved.
  • the strategy for electromagnetic interference control includes the following.
  • a target frequency of the second frequency is determined according to the interference channel list, where the target frequency is a frequency of the MIPI that causes the minimum interference to the operating frequency of the channel of the target router.
  • the frequency of the MIPI is adjusted to the target frequency.
  • the frequency of the MIPI that causes the minimum interference to the operating frequency of the channel currently used by the target router is determined according to the interference channel list, and frequency-hopping is performed for the MIPI of the display.
  • the electronic device determines the target frequency for frequency hopping according to interference information of a current channel of the router and the available frequency range or available frequency of the second frequency, and adjusts the frequency of the MIPI to the target frequency display when the display is turned on, which is convenient and efficient, and has low delay and high stability.
  • the strategy for electromagnetic interference control includes the following.
  • a target channel is determined according to the interference channel list, where the target channel is one of at least one wireless channel of the target router that causes the minimum interference to the operating frequency of the MIPI before the display is turned off.
  • a channel of the target router is switched to the target channel.
  • the target channel that causes the minimum interference to the operating frequency of the MIPI before the display is turned off is determined according to the interference channel list, and channel switch negotiation is conducted with the router to avoid interference when the display is turned on (i.e., lit up).
  • a frequency of the target channel determined by the electronic device will have little or no electromagnetic interference to the frequency of the MIPI of the display.
  • the electronic device determines the target wireless channel that causes the minimum interference to the frequency of the MIPI of the display according to the operating frequency of the at least one wireless channel and the frequency of the MIPI of the display, and wireless channel switching negotiation is conducted with the router. In this way, the electronic device can be avoided being interfered by the MIPI of the display, and the processing process is convenient and efficient, and of low delay and high stability.
  • the strategy for electromagnetic interference control includes the following.
  • a target channel and a target frequency of the second frequency are determined according to the interference channel list, where the target channel and the target frequency are a wireless channel and a frequency of the MIPI that correspond to the minimum interference in the interference channel list.
  • the frequency of the MIPI is adjusted to the target frequency and a channel of the target router is switched to the target channel.
  • the target channel and the frequency of the MIPI of the display that correspond to the minimum interference are determined according to the interference channel list, and when the display is activated, frequency hopping and channel switching negotiation with the router are performed at the same time to avoid interference.
  • the electronic device determines the target wireless channel that causes the minimum interference to the frequency of the MIPI of the display according to the operating frequency of the at least one wireless channel and the frequency of the MIPI of the display, so as to perform frequency hopping and negotiation with the router for wireless channel switching.
  • the electronic equipment can be avoided being interfered by the MIPI of the display, the processing process is convenient and efficient, and of low delay and high stability.
  • screen-projection to the target screen-projection device is performed by sending a source address of data information to the target screen-projection device, where the source address of data information is used for the target screen-projection device to establish a connection with a server at the source address.
  • the electronic device In response to detecting interference, the electronic device outputs a prompt message, and turns off the display to avoid interference.
  • the electronic device sends the source address of the data information to the target screen-projection device, the target screen-projection device directly connects with server at the source address after receiving the source address and obtains the data information from the server at the source address.
  • a mobile phone uses a video application such as iQIYI TM to perform screen-projection to a TV that is connected to the same Wi-Fi network.
  • the electronic device outputs a message that is used to indicate that interference is detected and the display is to be turned off, and continues to be connected with the TV in the background of the electronic device. After the TV obtains a source address of a video, the TV no longer interacts with the mobile phone, and directly obtains video information from the serve at the source address of the video.
  • the electronic device when there is electromagnetic interference, after the first prompt message is output, the display is turned off, and screen-projection to the target screen-projection device is performed, the electronic device further outputs a second prompt message when screen-projection of the electronic device is finished, where the second information is used to indicate that screen-projection is finished.
  • That screen-projection is finished includes successful screen-projection and failing screen-projection.
  • a second message is output to indicate success of screen-projection; when screen-projection is failing, a prompt message is output to prompt the user to re-perform screen-projection.
  • the second prompt message may be text message, ringing, vibration, etc., which is not uniquely limited here.
  • the electronic device outputs a prompt message after screen-projection is finished, so as to avoid interference caused by lighting of the display when screen-projection is not completed, and to improve the success rate of screen-projection.
  • FIG. 4 is a schematic flow chart illustrating a method for electromagnetic interference control according to other implementations.
  • the method is applicable to the electronic device of FIG. 1 or FIG. 2 .
  • the electronic device includes multiple wireless communication modules. As illustrated in FIG. 4 , the method begins at S401.
  • an electronic device activates a Wi-Fi module.
  • the electronic device searches for and accesses a target wireless network, where the target screen-projection device is connected to the target wireless network.
  • the electronic device obtains at least one detection value of a first frequency and a detection value of a second frequency, where the first frequency is a communication frequency of the Wi-Fi module and the second frequency is an operating frequency of the MIPI.
  • the electronic device determines whether there is electromagnetic interference between the Wi-Fi module and the MIPI of the electronic device according to an interference channel list, where the interference channel list contains information of interference of different operating frequencies of the MIPI to different channels.
  • the electronic device In response to detecting that there is electromagnetic interference, the electronic device outputs a first prompt message, turns off the display, and performs screen-projection to the target screen-projection device, where the first prompt message indicates that the electronic device is turning off the display and performing screen-projection to the target screen-projection device.
  • the electronic device in response to detecting the request for screen-projection to the target screen-projection device, activates the Wi-Fi module.
  • the electronic device searches for and accesses the target wireless network, where the target screen-projection device is connected to the target wireless network.
  • the electronic device detects whether there is electromagnetic interference between the Wi-Fi module and the MIPI of the display of the electronic device.
  • the electronic device outputs the first prompt message, turns off the display, and performs screen-projection to the target screen-projection device, where the first prompt message is used to indicate that the electronic device is turning off the display and performing screen-projection to the target screen-projection device.
  • the electronic device in response to detecting the request for screen-projection and there is electromagnetic interference between the Wi-Fi module and the MIPI of the display, the electronic device turns off the display, and performs screen-projection in the background, thereby avoiding electromagnetic interference between the Wi-Fi module and the MIPI of the display which affects a success rate of screen-projection, and improving communication stability in a screen-projection scene.
  • the electronic device can also determine the strategy for electromagnetic interference control according to the obtained operating frequency set of the at least one channel of the target router and the available frequency range or the available frequency of the second frequency, and perform interference control in response to detecting that the display is activated. In this way, electromagnetic interference occurred after the display is activated can be avoided, and stability of information interaction of the electronic device can be improved.
  • FIG. 4 is a schematic flow chart illustrating a method for electromagnetic interference control according to other implementations. The method is applicable to the electronic device of FIG. 1 or FIG. 2 . As illustrated in FIG. 5 , the method begins at S501.
  • an electronic device activates a Wi-Fi module.
  • the electronic device searches for and accesses a target wireless network, where the target screen-projection device is connected to the target wireless network.
  • the electronic device detects whether there is electromagnetic interference between the Wi-Fi module and a MIPI of a display of the electronic device.
  • the electronic device In response to detecting that there is electromagnetic interference, the electronic device outputs a first prompt message, turns off the display, and performs screen-projection to the target screen-projection device, where the first prompt message indicates that the electronic device is turning off the display and performing screen-projection to the target screen-projection device.
  • the electronic device obtains an operating frequency set of at least one channel of a target router and an available frequency range or available frequency of the second frequency.
  • the electronic device determines a strategy for electromagnetic interference control according to the interference channel list, the at least one detection value of the first frequency, and the detection value of the second frequency.
  • the electronic device performs interference control according to the strategy for electromagnetic interference control when the display is activated, to reduce or avoid electromagnetic interference between the MIPI and a radio frequency system of the electronic device.
  • the electronic device in response to detecting the request for screen-projection to the target screen-projection device, activates the Wi-Fi module.
  • the electronic device searches for and accesses the target wireless network, where the target screen-projection device is connected to the target wireless network.
  • the electronic device detects whether there is electromagnetic interference between the Wi-Fi module and the MIPI of the display of the electronic device.
  • the electronic device outputs the first prompt message, turns off the display, and performs screen-projection to the target screen-projection device, where the first prompt message is used to indicate that the electronic device is turning off the display and performing screen-projection to the target screen-projection device.
  • the electronic device in response to detecting the request for screen-projection and there is electromagnetic interference between the Wi-Fi module and the MIPI of the display, the electronic device turns off the display, and performs screen-projection in the background, thereby avoiding electromagnetic interference between the Wi-Fi module and the MIPI of the display which affects a success rate of screen-projection, and improving communication stability in a screen-projection scene.
  • the electronic device can also determine the strategy for electromagnetic interference control according to the obtained operating frequency set of the at least one channel of the target router and any one of the available frequency range and the available frequency of the second frequency, and perform interference control in response to detecting that the display is activated. In this way, electromagnetic interference occurred after the display is activated can be avoided, and stability of information interaction of the electronic device can be improved.
  • FIG. 6 is a schematic structural diagram illustrating an electronic device 600 according to implementations.
  • the electronic device 600 includes an application processor (AP) 610, a memory 620, a communication interface 630, and one or more programs 621 stored in the memory 620.
  • the one or more programs 621 are configured to be executed by the application processor 510 and include instructions configured to perform the following operations.
  • a Wi-Fi module is activated in response to detecting a request for screen-projection to a target screen-projection device.
  • a target wireless network is searched for and accessed, where the target screen-projection device is connected to the target wireless network.
  • Electromagnetic interference between the Wi-Fi module and a MIPI of a display of the electronic device is detected.
  • a first prompt message is output, the display is turned off, and screen-projection to the target screen-projection device is performed, where the first prompt message indicates that the electronic device is turning off the display and performing screen-projection to the target screen-projection device.
  • the electronic device in response to detecting the request for screen-projection to the target screen-projection device, activates the Wi-Fi module.
  • the electronic device searches for and accesses the target wireless network, where the target screen-projection device is connected to the target wireless network.
  • the electronic device detects electromagnetic interference between the Wi-Fi module and the MIPI of the display of the electronic device.
  • the electronic device outputs the first prompt message, turns off the display, and performs screen-projection to the target screen-projection device, where the first prompt message is used to indicate that the electronic device is turning off the display and performing screen-projection to the target screen-projection device.
  • the electronic device in response to detecting the request for screen-projection and there is electromagnetic interference between the Wi-Fi module and the MIPI of the display, the electronic device turns off the display, and performs screen-projection in the background, thereby avoiding electromagnetic interference between the Wi-Fi module and the MIPI of the display which affects a success rate of screen-projection, and improving communication stability in a screen-projection scene.
  • the one or more programs 621 include instructions configured to perform following operations. At least one detection value of a first frequency and a detection value of a second frequency are obtained, where the first frequency is a communication frequency of the Wi-Fi module and the second frequency is an operating frequency of the MIPI. In response to the detected electromagnetic interference between the Wi-Fi module and the MIPI of the electronic device is determined according to an interference channel list, where the interference channel list contains information of interference of different operating frequencies of the MIPI to different channels.
  • the one or more programs 621 further include instructions configured to perform following operations after the first prompt message is output and the display is turned off in response to the detected electromagnetic interference.
  • An operating frequency set of at least one channel of a target router and an available frequency range or available frequency of the second frequency are obtained.
  • a strategy for electromagnetic interference control is determined according to the interference channel list, the at least one detection value of the first frequency, and the detection value of the second frequency.
  • interference control is performed according to the strategy for electromagnetic interference control to reduce or avoid electromagnetic interference between the MIPI and a radio frequency system of the electronic device.
  • the one or more programs 621 include instructions configured to perform: determining a target frequency of the second frequency according to the interference channel list, where the target frequency is a frequency of the MIPI that causes the minimum interference to the operating frequency of the channel of the target router; adjusting the frequency of the MIPI to the target frequency.
  • the one or more programs 621 include instructions configured to perform: determining a target channel according to the interference channel list, where the target channel is one of at least one wireless channel of the target router that causes the minimum interference to the operating frequency of the MIPI before the display is turned off; performing channel switching according to the target channel.
  • the one or more programs 621 include instructions configured to perform: determining a target channel and a target frequency of the second frequency according to the interference channel list, where the target channel and the target frequency are a wireless channel and a frequency of the MIPI that correspond to the minimum interference in the interference channel list; adjusting the frequency of the MIPI to the target frequency and performing channel switching according to the target channel.
  • the one or more programs 621 include instructions configured to perform following operations.
  • a source address of data information is sent to the target screen-projection device, where the source address of data information is used for the target screen-projection device to establish a connection with a server at the source address.
  • the one or more programs 621 further include instructions configured to perform following operations after the first prompt message is output and the display is turned off in response to the detected electromagnetic interference.
  • a second prompt message is output when screen-projection of the electronic device is finished, where the second information indicates that screen-projection is finished.
  • the mobile terminal includes hardware structures and/or software modules corresponding to the respective functions.
  • the present disclosure can be implemented in hardware or a combination of the hardware and computer software. Whether a function is implemented by way of the hardware or hardware driven by the computer software depends on the particular application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each particular application, but such implementation should not be considered as beyond the scope of the present disclosure.
  • each functional unit may be divided according to each function, and two or more functions may be integrated in one processing unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or software functional units. It should be noted that the division of units in the implementations of the present disclosure is schematic, and is merely a logical function division, and there may be other division manners in actual implementation.
  • FIG. 7 is a block diagram illustrating functional units of a device 700 for electromagnetic interference control according to implementations.
  • the device 700 for electromagnetic interference control is applicable to an electronic device.
  • the electronic device includes a processing unit 701and a communication unit 702.
  • the processing unit 701 is configured to: activate a Wi-Fi module in response to detecting a request for screen-projection to a target screen-projection device; search for and access a target wireless network, the target screen-projection device being connected to the target wireless network; detect electromagnetic interference between the Wi-Fi module and a MIPI of a display of the electronic device; output a first prompt message, turn off the display, and perform screen-projection to the target screen-projection device, in response to the detected electromagnetic interference, where the first prompt message indicates that the electronic device is turning off the display and performing screen-projection to the target screen-projection device.
  • the device 700 for electromagnetic interference control may also include a storage unit 703 for storing program codes and data of the electronic device.
  • the processing unit 701 may be a processor
  • the communication unit 702 may be a touch screen or a transceiver
  • the storage unit 703 may be a memory.
  • the electronic device in response to detecting the request for screen-projection to the target screen-projection device, activates the Wi-Fi module.
  • the electronic device searches for and accesses the target wireless network, where the target screen-projection device is connected to the target wireless network.
  • the electronic device detects electromagnetic interference between the Wi-Fi module and the MIPI of the display of the electronic device.
  • the electronic device outputs the first prompt message, turns off the display, and performs screen-projection to the target screen-projection device, where the first prompt message is used to indicate that the electronic device is turning off the display and performing screen-projection to the target screen-projection device.
  • the electronic device in response to detecting the request for screen-projection and there is electromagnetic interference between the Wi-Fi module and the MIPI of the display, the electronic device turns off the display, and performs screen-projection in the background, thereby avoiding electromagnetic interference between the Wi-Fi module and the MIPI of the display which affects a success rate of screen-projection, and improving communication stability in a screen-projection scene.
  • the processing unit 701 configured to detect the electromagnetic interference between the Wi-Fi module and the MIPI of the electronic device is configured to: obtain at least one detection value of a first frequency and a detection value of a second frequency, where the first frequency is a communication frequency of the Wi-Fi module and the second frequency is an operating frequency of the MIPI; determine the electromagnetic interference between the Wi-Fi module and the MIPI of the electronic device according to an interference channel list, where the interference channel list contains information of interference of different operating frequencies of the MIPI to different channels.
  • the processing unit 701 is further configured to: after outputting the first prompt message and turning off the display in response to the detected electromagnetic interference: obtain an operating frequency set of at least one channel of a target router and an available frequency range or available frequency of the second frequency; determine a strategy for electromagnetic interference control according to the interference channel list, the at least one detection value of the first frequency, and the detection value of the second frequency; perform interference control according to the strategy for electromagnetic interference control when the display is activated, to reduce or avoid electromagnetic interference between the MIPI and a radio frequency system of the electronic device.
  • the processing unit 701 is further configured to: determine a target frequency of the second frequency according to the interference channel list, where the target frequency is a frequency of the MIPI that causes the minimum interference to the operating frequency of the channel of the target router; adjust the frequency of the MIPI to the target frequency.
  • the processing unit 701 is further configured to: determine a target channel according to the interference channel list, where the target channel is one of at least one wireless channel of the target router that causes the minimum interference to the operating frequency of the MIPI before the display is turned off; perform channel switching according to the target channel.
  • the processing unit 701 is further configured to: determine a target channel and a target frequency of the second frequency according to the interference channel list, where the target channel and the target frequency are a wireless channel and a frequency of the MIPI that correspond to the minimum interference in the interference channel list; adjust the frequency of the MIPI to the target frequency and perform channel switching according to the target channel.
  • the processing unit 701 configured to perform screen-projection to the target screen-projection device is configured to: send a source address of data information to the target screen-projection device, where the source address of data information is used for the target screen-projection device to establish a connection with a server at the source address.
  • the processing unit 701 is further configured to: after outputting the first prompt message, turning off the display, and performing screen-projection to the target screen-projection device, in response to the detected electromagnetic interference: output a second prompt message when screen-projection of the electronic device is finished, where the second information indicates that screen-projection is finished.
  • Implementations further provide a computer storage medium.
  • the computer storage medium is configured to store a computer program for electronic data interchange.
  • the computer program causes a computer to execute all or part of operations of the method of the above.
  • the computer includes an electronic device.
  • Implementations further provide a computer program product.
  • the computer program product includes a non-transitory computer-readable storage medium storing a computer program.
  • the computer program is operable to cause the computer execute all or part of operations of the method of the above.
  • the computer program product may be a software installation package.
  • the computer includes an electronic device.
  • the apparatus disclosed in implementations provided herein may be implemented in other manners.
  • the device/apparatus implementations described above are merely illustrative; for instance, the division of the unit is only a logical function division and there can be other manners of division during actual implementations, for example, multiple units or components may be combined or may be integrated into another system, or some features may be ignored, omitted, or not performed.
  • coupling or communication connection between each illustrated or discussed component may be direct coupling or communication connection, or may be indirect coupling or communication among devices or units via some interfaces, and may be electrical connection, mechanical connection, or other forms of connection.
  • the units described as separate components may or may not be physically separated, the components illustrated as units may or may not be physical units, that is, they may be in the same place or may be distributed to multiple network elements. All or part of the units may be selected according to actual needs to achieve the purpose of the technical solutions of the implementations.
  • the functional units in various implementations of the present disclosure may be integrated into one processing unit, or each unit may be physically present, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or a software function unit.
  • the integrated unit may be stored in a computer readable storage when it is implemented in the form of a software functional unit and is sold or used as a separate product.
  • the technical solutions of the present disclosure essentially, or the part of the technical solutions that contributes to the related art, or all or part of the technical solutions, may be embodied in the form of a software product which is stored in a memory and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device and so on) to perform all or part of the steps described in the various implementations of the present disclosure.
  • the memory includes various medium capable of storing program codes, such as a USB (universal serial bus) flash disk, a read-only memory (ROM), a random-access memory (RAM), a removable hard disk, Disk, compact disc (CD), or the like.

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Claims (11)

  1. Procédé de maîtrise des interférences électromagnétiques pour un dispositif électronique et comprenant :
    l'activation (S301, S401, S501) d'un module de type Wireless Fidelity, Wi-Fi, en réponse à la détection d'une demande de projection sur écran vers un dispositif de projection sur écran cible ;
    la recherche (S302, S402, S502) d'un réseau sans fil cible et l'accès à celui-ci, le dispositif de projection sur écran cible étant connecté au réseau sans fil cible ;
    la détection (S303, S503) d'interférences électromagnétiques entre le module Wi-Fi et une interface de type Mobile Industry Processor Interface, MIPI, d'un affichage du dispositif électronique ; et
    l'émission (S304, S405, S504) d'un premier message-guide, l'extinction de l'affichage et la réalisation d'une projection sur écran vers le dispositif de projection sur écran cible, en réponse aux interférences électromagnétiques détectées, le premier message-guide indiquant que le dispositif électronique éteint l'affichage et réalise une projection sur écran vers le dispositif de projection sur écran cible.
  2. Procédé selon la revendication 1, dans lequel la détection des interférences électromagnétiques entre le module Wi-Fi et la MIPI de l'affichage du dispositif électronique comprend :
    l'obtention (S403) d'au moins une valeur de détection d'une première fréquence et d'une valeur de détection d'une deuxième fréquence, la première fréquence étant une fréquence de communication du module Wi-Fi et la deuxième fréquence étant une fréquence de fonctionnement de la MIPI ; et
    la détermination (S404) des interférences électromagnétiques entre le module Wi-Fi et la MIPI du dispositif électronique selon une liste de canaux d'interférences, la liste de canaux d'interférences contenant des informations sur des interférences de fréquences de fonctionnement différentes de la MIPI avec des canaux différents.
  3. Procédé selon la revendication 1 ou 2, comprenant en outre :
    suite à l'émission du premier message-guide et à l'extinction de l'affichage en réponse aux interférences électromagnétiques détectées :
    l'obtention (S505) d'un ensemble de fréquences de fonctionnement d'au moins un canal d'un routeur cible et d'une plage de fréquences disponibles de la première fréquence ou d'une fréquence disponible de la deuxième fréquence ;
    la détermination (S506) d'une stratégie de maîtrise des interférences électromagnétiques selon la liste de canaux d'interférences, l'au moins une valeur de détection et la valeur de détection de la deuxième fréquence ; et
    la réalisation (S507) d'une maîtrise des interférences selon la stratégie de maîtrise des interférences électromagnétiques lorsque l'affichage est activé, dans le but de réduire ou d'éviter les interférences électromagnétiques entre la MIPI et un système radiofréquence du dispositif électronique.
  4. Procédé selon la revendication 3, dans lequel la liste de canaux d'interférences contient des valeurs d'interférences et des niveaux d'interférences relatifs aux interférences de fréquences de fonctionnement différentes de la MIPI avec des canaux Wi-Fi différents.
  5. Procédé selon la revendication 3, dans lequel la stratégie de maîtrise des interférences électromagnétiques comprend :
    la détermination d'une fréquence cible de la deuxième fréquence selon la liste de canaux d'interférences, la fréquence cible étant une fréquence de la MIPI qui provoque le minimum d'interférences avec la fréquence de fonctionnement du canal du routeur cible ; et
    le réglage de la fréquence de la MIPI sur la fréquence cible.
  6. Procédé selon la revendication 3, dans lequel la stratégie de maîtrise des interférences électromagnétiques comprend :
    la détermination d'un canal cible selon la liste de canaux d'interférences, le canal cible étant l'un d'au moins un canal sans fil du routeur cible qui provoque le minimum d'interférences avec la fréquence de fonctionnement de la MIPI avant l'extinction de l'affichage ; et
    la réalisation d'une commutation de canal selon le canal cible.
  7. Procédé selon la revendication 3, dans lequel la stratégie de maîtrise des interférences électromagnétiques comprend :
    la détermination d'un canal cible et d'une fréquence cible de la deuxième fréquence selon la liste de canaux d'interférences, le canal cible et la fréquence cible étant un canal sans fil et une fréquence de la MIPI qui correspondent au minimum d'interférences dans la liste de canaux d'interférences ; et
    le réglage de la fréquence de la MIPI sur la fréquence cible et la réalisation d'une commutation de canal selon le canal cible.
  8. Procédé selon l'une quelconque des revendications 1 à 7, dans lequel la réalisation d'une projection sur écran vers le dispositif de projection sur écran cible comprend :
    l'envoi d'une adresse source d'informations de données au dispositif de projection sur écran cible, l'adresse source d'informations de données étant utilisée par le dispositif de projection sur écran cible pour établir une connexion avec un serveur à l'adresse source.
  9. Procédé selon la revendication 8, comprenant en outre :
    suite à l'émission du premier message-guide, à l'extinction de l'affichage et à la réalisation d'une projection sur écran vers le dispositif de projection sur écran cible, en réponse aux interférences électromagnétiques détectées :
    l'émission d'un deuxième message-guide lorsque la projection sur écran du dispositif électronique prend fin, les deuxièmes informations indiquant que la projection sur écran prend fin.
  10. Dispositif électronique comprenant un processeur (610), une mémoire (620), une interface de communication (630) et un ou plusieurs programmes (621) enregistrés dans la mémoire, les un ou plusieurs programmes étant configurés pour être exécutés par le processeur et comprenant des instructions configurées pour réaliser des opérations du procédé selon l'une quelconque des revendications 1 à 9.
  11. Support d'enregistrement lisible par ordinateur sur lequel est enregistré un programme d'ordinateur pour l'échange de données informatisé, le programme d'ordinateur amenant un ordinateur à exécuter le procédé selon l'une quelconque des revendications 1 à 9.
EP19885648.6A 2018-11-13 2019-09-30 Procédé de commande d'interférence électromagnétique et appareil associé Active EP3869713B1 (fr)

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